How many movies have Frank Conniff and Mary Jo Pehl acted in together?

They have worked on 18 movies together! Their first movie together was Mystery Science Theater 3000: Manos: The Hands of Fate (1993) and was their highest rated movie together. They have not worked together since RiffTrax Live: Day of the Shorts: SF Sketchfest 2019 (2019). They are most known for their comedy films together.